Heater



'M. K. DUNHAM.

HEATER.

APPLICATION FILED MN. 22, 1918.

Patented July 19, 192 1.

OODQOOOOOD OQOOOO O O.

1623232 MmWDMJAW UNITED STATES PATENT OFFICE.

MILBOURNE KEITH DUNI-IAM, .OF NEW YORK, N. 1., ASSIGNOR OF ONE-THIRD TOCHARLES BERG- AND TWO-THIRDS TO WILLGOT KLINGBERG, BOTH OF NEW YORK, N.Y.

HEATER.

Specification of Letters Patent. Patented July 19, 1921.

Application filed January 22, 1918. Serial No. 213,128.

To all whom it may concern:

Be it known that I, MILBQURNE Knrrrr DUNHAM, a citizen of the UnitedStates, residing at New York, in the county and State of New York, havemade a certain new and useful Invention in Heaters, of which thefollowing is a specification.

This invention relates to combustion engine heaters.

The object of the'invention is to provide a heater, which is simple instructure, efficient in use and economical of manufacture.

The further object of the invention is to provide a heater which doesnot increase fire hazard when used in connection with the automobile.

A further object of the invention is to pro vide heater, which is waterjacketed.

A further object of the invention is to provide a heater which doesnottransmit the vibrations of the motor to the car bodyl and which allowsthe heater to be of any desired finish without danger of cracking" orother disfiguration thereof.

A further object of the invention is to provide a heater which may bereadily controlled and which has in connection therewith, various'features to' make the same safe against explosion and against injury,due to the water in the water jacket thereof, from freezing.

A further object of the invention will appear more fully hereinafter.

The invention consists substantially in the construction, combination,location and relative arrangement of parts all as will be more fullyhereinafter set forth, as shown in the accompanying drawing and finallypointed out in the appended claims.

Referring to the drawing, Figure 1 is a sectional view in frontelevation of a heater embodying my invention. Fig. 2 is a sectional viewtaken on the line 2-2, Fig. 1 and looking in the direction of thearrows.

Fi 3 is a sectional View taken on the line 33 Fig. 1 and looking in thedirection of the arrows. I r

Fig. 4 is a sectional view taken on the line 4-4, Fig. 1 and looking inthe direction of the arrows. v

Fig. 5 is a top plan view of a portion of a modified structure of heaterembodying my invention. I

The same part is designated by the same reference numeral wherever itoccursploying the water heater are obvious. In

the first place it avoids, the objection of all odor of poisonous gasesfrom leaky joints on porous castings. becondly, due to the fact. thatthe usual gas heater becomes as heated as the exhaust and passes throughthe floor boards of the car, I avoid the hazard of fire due to theheater pipe scorching the wood of the floor boards. Thirdly, I avoid thepossibility of the heater becoming. so hot.

as to. burn the shoes of the occupants when the heater is in the form ofa foot rest on to burn any other apparel of the occu-.

pants in the car, or of the ears interior furnishings, when the heateris used in any other form. Fourthly, I employ no open space in the floorboards of the car to allow the heater pipe to pass therethrough, whichwould result in dust orrefuse from the street being swept into the caror rattle or other noisy jar to be present. Fifthly, due to the factthat the pipes forming theheater are not restricted in diameter theexhaust gases are not retarded in their flow and the pulsation of themotor is not felt by the occupants in the car.

lVhile it is obvious that the heater em bodying my invention is not tobe limited to such details as size, shape, material or form, I w1ll nowdescribe as one BmbOdlIllellll of my invention, a form of heater,preferably water jacketed, and of metal which is made into a foot restfor the occupants of the car.

Referring to the drawing, 1 designates the foot rest of the heater whichin the form shown, but to which'I am not to be limited, or restricted,is a cylindrical tube provided with two su'pporting cylindricalstanchions 2. Located within the cylinder 1 is a pipe 3 provided withtwo extensions 4: and 5 to communicate therewith and extending throughthe cylindrical supports 2, as shown. The pipe 3 is supported Within thecylinder 1 in any suitable or desirable manner so as base portion of thesupports 2, completely around the circumference thereof as shown. Itwill be seen that by this arrangement I provide a water jacketcompletely around the pipe 3 and around the portions of the projections4 andv 5 thereof which lie within the supports 2. Itisapparent that thesizeof the water jacket may be varied at will by increasing the size ofthe cylinder I r 1, or decreasing the size of the pipe 3, or

both. Extension 5 of the pipe 3 is connected in any suitable manner tothe exhaustline of the motor, preferably between the motor and themuffler. The efficient connection for this purpose, I find to be aflexible pipe, not shown. The, extension 4 of the pipe 3 is connected toexhaust in any. suitable, well known manner. Supports 2 of the cylinder1 are provided with a circumferential flange 7, located 'a shortdistance above the bottom end of the support as shown. These flanges areadapted to be secured tothe flooring 8 of the car body to hold theheater in position. It will be seen that the water jacket about theextensions 4 and 5 of the pipe 3, which I will hereinafter refer to asthe outlet and inlet pipe, extends below the body floor so that the firehazard due to the hot gases setting fire to the flooring, is completelyeliminated, when water is supplied to the heater. Any suitable means maybe employed for allowingthe cylinder 1 to be filled with water or otherfluid. In practice, I prefer to place the filling mouth or neck scommunicating with the interior of the cylinder 1, offset relativethereto and in the rear thereof to thereby move the same out of possiblecontact with the feet of the occupants of the car, when the heater isused as afoot rest. I have shown suchan arrangement wherein thecylinder1 is provided with a neck .9, which is adapted to receive a plug 10therein, which, in the form shown, is a screw plug.

One of the special features of my inven tion is to provide means forpreventing the heater from exploding in case steam is generated therein.To this end, I show the plug 10 as being provided with a blow-off valve11 of any desired Or well known structure, the valve head of which isnormally retained seated by a spring 12, as shown. If desired, means maybe employed for draining the water from the interior of the cylinder 1to prevent injury thereto, due to freezing when the car is laid up incold weather. I provide a pipe 13 located at'the bottom portion of thecylinder 1,.which is provided with projections extending into thesupports 2 down to the approximate bottoms thereof.

The pipe 13 also passes through the cylinder 1 and the flooring 8 andisprovided with a stop-cock 14, whereby, when it is desired, to drain thewater from the cylinder 1, the

stop-cock 1 1 is opened and the pipe 13 conse- To afford ready controlofthe heater and ing to normally pull the lever upwardly to.

close the intake pipe 5, by means of the throttle 20, by rocking thesame about its pivotal axis. The lever 22 is also-provided with notches25 adapted to engage the flange 'Z where the lever 22 passestherethroughto hold the throttle 20 in any desired adjusted positionagainst the action of the spring;23,.as will be readily understood. Ifdesired,-an d as shown in Fi g. 2, a spring guide 26 secured to theunder surface of the support 2 may tend to normally press the lever 22outwardly into engaging relation with the flange 7, to thereby preventthe vibrations or jar .of the car from varying the adjustment of theheater.

This valve or throttle can obviously be controlled by the foot. From theforegoing it is seen that I have provided a simple and efficient heater,the installation of which is simple and requires only 't-wo 2holes inthe floor board and a tap into-the exhaust pipe for the flexibleconnection thereto. There is no rattle as-there are no joints to workloose and there are no rivets to shear or become noisy. It is obviousthatthe heat is distributed evenly and the-water within the cylinder 1remains heated for sometime greater at any time than 212 F. Further,

the objection of creating back pressure upon the motor is eliminated dueto the fact that the outlet for the gas with the heater attached islarger than it is before the heater is installed. Because of the factthat hot water entirely surrounds all of the parts of the heater insidethe car, the character of the finish of the cylinder 1 is notrestricted, and it is obvious that nickel or copper plate, bronze andaluminum plate may be used, or in fact any desired finish may be used toconform with the interior finish of the car without the danger of samebecoming cracked due to the heat of the heater and thus afford anunsightly heater for an otherwise artistically finished car body.

While I have shown and described a specific embodiment of my invention,I wish it to be understood that many modifications will occur to thoseskilled in the art withoutdeparting from the spiritand scope thereof.For example, while I deem the use of a water jacket to be preferable,the water may be eliminated therefrom and the cylinder 1 may beperforated, as shown in Fig. 5, and thus secure the benefits of a heaterby hot air. It is obvious that many other variations and modificationsand details will occur to those skilled in the art.

While for the purposes of illustration I have described my invention asapplied to an automobile heater I wish it to be understood that the samecan be used in connection with an explosion engine either stationaryengine, aeroplane engine or any other type where it is desired to heatbodies by the exhaust gases of the engine.

Having now set forth the nature of my invention, what I claim to be newand useful and desire to secure by Letters Patent is:

1. In a heater for explosive engine driven vehicles, a pipe adapted tobe in communication with the exhaust pipe of the engine, and extendingthrough the car body, and a casing completely surrounding said pipe andthe portions thereof extending through said car body, to form a spacebetween said pipe and casing, and an orifice in said casing foradmitting water into the same, and a cap carrying a blowoff valve forsaid orifice.

2. In a heater for explosive engine driven vehicles, a pipe adapted tobe placed in communication with the exhaust pipe of the engine, andextending through the car body, and a casing completely surrounding saidpipe and the portions thereof extending through said car body, to form aspace between said pipe and casing, and means for admitting Water intosaid casing and means comprising a siphon connection for draining theWater from said casing.

3. In a heater for explosive engine driven vehicles, a pipe adapted tobe placed in communication with the exhaust pipe of the engine, andextending through the car body, and a casing completely surrounding saidpipe and the portions thereof extending through said car body, to form aspace between said pipe and casing, and a foot actuated valve forcontrolling the amount of gas passing through said pipe.

4. In a heater, the combination with a casing provided with supportingextensions therefor, of a pipe located within said casing and providedwith extensions located within the supporting extensions of said casing,said pipe and casing being welded together at the bottom portion of saidsupporting extensions to make said casing water tight and to supportsaid pipe in said casing out of contact therewith to form a spacebetween said pipe and said casing at all points.

5. In a heater, the combination with a casing provided with supportingextensions therefor, of a pipe located within said casing and providedwith extensions located within the supporting extensions of said casing,said pipe and casing being welded together at the bottom portion of saidsupporting extensions to make said casing water tight and to supportsaid pipe in said casing out of contact therewith to form a space beweensaid pipe and said casing at all points and means located above thejointure of said pipe and casing for securing said casing to theautomobile body.

6. In a heater, the combination, with a casing, provided with supportingextensions therefor, of a pipe located within said casing and providedwith extensions located within the supporting extensions of said casingand secured to the bottom portion of said supporting extensions to makesaid casing water tight, and means for admitting water into said casing,and a siphon controlled by a stop cock and having projections extendinginto the supporting extension for draining the water from said casing.

In testimony whereof I have hereunto set my hand on this 14th day ofJanuary, A. D.

MILBOURNE KEITH DUNI-IAM.

